单极脉冲法沉积聚3,4-乙烯二氧噻吩及其电容性能  

Capacitive Properties of Poly(3,4-ethylenedioxythiophene) Electrodeposited by Unipolar Pulse

作　　者：刘晓晓 王媛媛 杜海燕[1] 许玉玉[1] Xiaoxiao Liu;Yuanyuan Wang;Haiyan Du;Yuyu Xu(College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, Chin)

机构地区：[1]太原理工大学化学化工学院,山西太原030024

出　　处：《高分子材料科学与工程》2018年第2期76-80,87,共6页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(21304065)

摘　　要：聚3,4-乙烯二氧噻吩(PEDOT)因具有非常高的离子电导率而被广泛研究。文中以EDOT为单体,采用单极脉冲法在不锈钢片基底上制备了PEDOT膜电极。考察了不同脉冲参数对PEDOT膜超级电容的影响。通过扫描电子显微镜、傅里叶变换红外光谱表征PEDOT涂覆的不锈钢电极,确认了PEDOT由不规则的虚球体堆积成褶皱状结构,证实了Cl O4-成功掺杂于PEDOT膜中;通过循环伏安法、恒电流充电/放电和电化学阻抗谱得到:PEDOT电极展示出良好的比电容(128.64 F/g)、倍率性能和稳定性(循环2000次保留率达71.26%)。对于低成本、高性能的能量存储应用显示出相当大的潜力。Poly（3,4-ethylenedioxythiophene）（PEDOT） was extensively studied for its high ionic conductivity. In this paper,PEDOT films electrodes were prepared on the stainless steel substrates by unipolar pulse method using 3,4-ethylenedioxythiophene（EDOT） as monomer. The effects of different pulse parameters on the capacitance of PEDOT films were investigated. The PEDOT-coated stainless steel electrode was characterized by scanning electron microscopy and Fourier transform infrared spectroscopy,which confirm that PEDOT films are deposited into a pleated structure by an irregular virtual sphere,and a high degree of ClO_4-is successfully doped in the PEDOT films. In addition,the results of cyclic voltammetry and galvanostatic charge/discharge show that the PEDOT electrodes exhibit a good specific capacitance of 128.64 F/g,rate performance and stability（retention rate = 71.26% after 2000 cycles）. The thin,lightweight electrode material based supercapacitor shows considerable potential for low-cost,high-performance energy storage applications.

关 键 词：单极脉冲法 超级电容 聚3 4-乙烯二氧噻吩 循环伏安法 恒电流充放电 

分 类 号：O631.23[理学—高分子化学]